Server : Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.4.20 System : Linux st2.domain.com 3.10.0-1127.10.1.el7.x86_64 #1 SMP Wed Jun 3 14:28:03 UTC 2020 x86_64 User : apache ( 48) PHP Version : 7.4.20 Disable Function : NONE Directory : /var/www/html/trader/vendor/workerman/workerman/Protocols/ |
<?php /** * This file is part of workerman. * * Licensed under The MIT License * For full copyright and license information, please see the MIT-LICENSE.txt * Redistributions of files must retain the above copyright notice. * * @author walkor<[email protected]> * @copyright walkor<[email protected]> * @link http://www.workerman.net/ * @license http://www.opensource.org/licenses/mit-license.php MIT License */ namespace Workerman\Protocols; use Workerman\Connection\TcpConnection; /** * Frame Protocol. */ class Frame { /** * Check the integrity of the package. * * @param string $buffer * @param TcpConnection $connection * @return int */ public static function input($buffer, TcpConnection $connection) { if (\strlen($buffer) < 4) { return 0; } $unpack_data = \unpack('Ntotal_length', $buffer); return $unpack_data['total_length']; } /** * Decode. * * @param string $buffer * @return string */ public static function decode($buffer) { return \substr($buffer, 4); } /** * Encode. * * @param string $buffer * @return string */ public static function encode($buffer) { $total_length = 4 + \strlen($buffer); return \pack('N', $total_length) . $buffer; } }